How do you find the radius of a circle if you have the circumference?

Find the radius of the circle.
Circumference = 62.8 mi

1 Answer
May 25, 2018

A formula for the circumference of a circle is:

C = 2pir

Solve the formula for r:

r = C/(2pi)

Substitute in the given circumference.

Explanation:

Given C = 62.8" mi"

r = (62.8" mi")/(2pi)

r = 9.995" mi"